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| 引用本文： | 陈晓旭,唐翠明,洪伟,谷渝秋,王光昶.���̳�ǿ�������������������б����������������[J].核聚变与等离子体物理,2012,32(2):183-186. |
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| 作者姓名： | 陈晓旭 唐翠明 洪伟 谷渝秋 王光昶 |
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| 作者单位： | (1. ????????????????? 643002??2. ?й??????????о?????????о?????????? 621900??3. ??????????????????? 610083?? |
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| 基金项目： | 国家自然科学基金资助项目，四川省教育厅科研项目，四川理工学院理学院科研项目 |
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| 摘 要： | 实验研究了超短超强激光与7μm薄膜Cu靶的相互作用中靶背法线方向产生的质子和碳离子的能量分布。实验中采用CR39和Thomson磁谱仪相结合测量质子和碳离子能谱。实验中观察到了质子和C4+、C3+、C2+和C1+离子。实验结果表明:离子沿着靶背法线方向发射,离子在一定能量处出现截断;质子的产额远远高于碳离子产额;C4+、C3+、C2+和C1+最大截止能之比约为4:3:2:1。
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| 关 键 词： | 超短超强激光 质子 碳离子 能谱 CR39 Thomson磁谱仪 |
Energy spectrum of ions generated by femtosecond laser and plasmas interaction at the back-side of target |
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| CHENG Xiao-xu
,
TANG Cui-ming
,
HONG Wei
,
GU Yu-qiu
,
WANG Guang-chang.Energy spectrum of ions generated by femtosecond laser and plasmas interaction at the back-side of target[J].Nuclear Fusion and Plasma Physics,2012,32(2):183-186. |
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| Authors: | CHENG Xiao-xu TANG Cui-ming HONG Wei GU Yu-qiu WANG Guang-chang |
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| Institution: | (1??Department of Physics and Mathematics, Sichuan University of Science & Engineering, Zigong 643002; 2. Research Center of Laser Fusion, CAEP, Mianyang 621900; 3. Teaching and Research Section of Physics, Chengdu Medical College, Chengdu 610083) |
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| Abstract: | In the ultra-short and ultra-intense laser interaction with 7μm Cu target,we use CR39 and Thomson spectrometer to detect the energy spectrum of protons and carbon ions at the normal direction of target back.Protons,C4+,C3+,C2+ and C1+ ions have been observed experimentally.In addition,the results show that the ions are emitted along the target rear-side normal direction and the ions were cut-off at a certain energy.What is more,the yield of proton is much higher than the one of carbon ions,and the ratio of the maximum cut-off energy of the C4+,C3+,C2+ and C1+ ions is about 4: 3: 2: 1. |
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| Keywords: | Ultra-short and ultra-intense laser Proton Carbon ion Energy spectrum CR39 Thomson spectrometer |
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